摘要
基于精密单点定位(precise point positioning,PPP)技术,对海上动态GPS斜路径水汽含量(SWV)估计进行研究。在现有计算方法的基础上,提出了顾及星间单差残差的SWV提取方法。利用渤海湾船载动态GPS测量数据和同步气象观测数据,对新方法的有效性进行了验证。结果表明,相对于MM5模式积分水汽结果,采用新方法计算的SWV值的RMS为1.2mm,比传统"非差残差法"减小了1mm。
The estimate of marine kinematic GPS slant-path water vapor （SWV） is researched using Precise Point Positioning （PPP） technique in this paper. Based on the current study, this paper proposes a new method which takes into account the single difference residuals between satellites. The validity of this new method is verified by the comparison between the result of MM5 and that from the ship-borne kinematic GPS data. The result shows that the new method gives 1.2 mm RMS in SWV relative to MM5 result. That improves 1ram RMS in SWV compared to the current method.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2012年第7期834-838,共5页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2009AA12Z127)
海岛(礁)测绘技术国家测绘地理信息局重点实验室资助项目(2010B03)
关键词
精密单点定位
非差残差
斜路径水汽含量
precise point positioning zero difference residuals slant-path water vapor
